网络管理工具

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * des:网络管理工具
 * Created by xsf
 * on 2016.04.10:34
 */
public class NetWorkUtils {

    /**
     * 检查网络是否可用
     *
     * @param paramContext
     * @return
     */
    public static boolean isNetConnected(Context paramContext) {
        boolean i = false;
        NetworkInfo localNetworkInfo = ((ConnectivityManager) paramContext
                .getSystemService(Context.CONNECTIVITY_SERVICE)).getActiveNetworkInfo();
        if ((localNetworkInfo != null) && (localNetworkInfo.isAvailable()))
            return true;
        return false;
    }
    /**
     * 检测wifi是否连接
     */
    public static boolean isWifiConnected(Context context) {
        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        if (cm != null) {
            NetworkInfo networkInfo = cm.getActiveNetworkInfo();
            if (networkInfo != null && networkInfo.getType() == ConnectivityManager.TYPE_WIFI) {
                return true;
            }
        }
        return false;
    }

    /**
     * 检测3G是否连接
     */
    public static boolean is3gConnected(Context context) {
        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        if (cm != null) {
            NetworkInfo networkInfo = cm.getActiveNetworkInfo();
            if (networkInfo != null && networkInfo.getType() == ConnectivityManager.TYPE_MOBILE) {
                return true;
            }
        }
        return false;
    }

    /**
     * 判断网址是否有效
     */
    public static boolean isLinkAvailable(String link) {
        Pattern pattern = Pattern.compile("^(http://|https://)?((?:[A-Za-z0-9]+-[A-Za-z0-9]+|[A-Za-z0-9]+)\\.)+([A-Za-z]+)[/\\?\\:]?.*$", Pattern.CASE_INSENSITIVE);
        Matcher matcher = pattern.matcher(link);
        if (matcher.matches()) {
            return true;
        }
        return false;
    }
}